Latching and braking device for adjustable windows



June 14, 1927. 1,632,677

E.'J. RAWLINGS 'y LATCHING AND BRAKING DEVICE FOR ADJUSTABLE WINDOWS Filed uw. 26. 1924 2 sheets-sheet 1' 1,632,671 June 14.1927 E. J. RAwLlNGs LATCHING AND BRAKING DEVICE FOR ADJUSTABLE WINDOWS Filed Dec. 26. 1924 2 Sheets-Sheet 2 yPatented June 14A,` 192.7.`

UNITEDSTATES vnrifivnstr JOHN ,RAWLiNes orf LoNnoN', ENGLAND, AssicNon rro .nlmtines,ivinfivu'` rAorURiNe Acogli/@ANY LiM'I'TED, or LONDON, ENGLAND.

vLATCHINGfAND izniiimel nnvon fron AnJUsrnBLnWINDows.

` Application lred `December 26, 1924, Serial No. 75.8,-279, anidvin France Getober4,1924.l

vThis invention relates to latching andr brziking devices `loi adjustable windows and has particular reference to thel vertically adjustable spring controlled windows cive- .hicles such as automobiles 'and railway` carriages lthe chief object'being to provide iinproved means tor securing the window at any desired height and for preventing it from rattling.

According to the present-invention one or each of the vertical limbs oi the iframe oi the glassV is iiormedwith a row ot' recesses with which ico-operates-a spring-controlled sliding boltorlatch adapted-to be -mechanically bolt into one of the recesses land a lug cowithdrawn'nwhen desired by anyone wishing Y to adpistthe Window, the bolt comprisinga sliding bodyV portion formed with a recess accommodating' a spring for proJecting the operable with means for withdrawing the latch.' Cofoperatin'g with the aforesaid bolt orlatch I k may also provide near one or each edge ofl the window a pivote'd bar whichis normally pressed against the edge ol the window but is moved away therefrom by Withdrawal of the bolt or latch. lThis bar when pressing against the widow serves oli course as an anti-rattling and draughtproof device. v

In order that the invention may be cleari lyunderstoodand .readily carried intoetfeet the same will now be described more fully with reference to the accompanying drawings in which Figure l is a 'ront elevation of part of a` vehicle door having a vertically sliding glassk lwindow controlled in accordance with the present inventiony` o Figure 2 is avertical` sectional elevation of the parts on the line A-'-A of Figure l.

Figure is a sectional plan of the saine on the line B B of Figurel.

Figure 4 is a fragmentarysectional View ofthe latch and associated .parts in their alternative position. y p

Figure 5 is a `fragmentary sectional vie-W of a modified form of the latch andvassociated parts.

The plate glass Window l is `mounted in a frame or in vertical metal channel lpieces serving as a frame. The vertical ychannel piece V2 shewn in the drawings is formed with a row of recesses preferably in the Vform of triangular edge recesses (Fig. 3)

with which co-operates a latch 4. The body portion 550i the latch isi'ormed with 'ahol-7 low Vcentral passage ciintaining.aspring by which the latch a whole isptlirusttowards the rccessesl.

The body portion 5 of the latch has twovv iid upst-anding'posts 7 and-8 -'lllie post 7 is adapted to co-opeiate with a lug or projec# tion 9 on the foot ol a presserrbar r1() ip lungeielile bearing pieces 14 and l5 respectively which bear ing pi-ece 16.

"The post 8 on the body portion o'l' the latch against a facing is located to be engaged by a crank or arm` lf? on a transversely extending rod 1,8 adapted to be turned angnlarly by means ofainger piece or handle door. n Y V 2O is a spring barrel and 2l is a cord by which the window is automatically raised when released. A. i

,The operation of the mechanism is as fol-v vlows :Assuming that the parts are in the position shown in Figures l and)J 'and that itis desired to raise or lower the Window,

Y*the handle 19 is raised, thereby rocking the rod 18 and causing the crank lor arm 17`to bearragainst the postS and push backthe body portion 5 and latch proper 4 against the pressure of the spring 6. As soon as the latch is free trom the recess 3 in which it washoused7 the further` retractive movement Aof the latch body causes the post 7 to engage the lug or projection-9 and thereby rockt e 19 atthe centre of Vthe lso post ffengages the lug ori K presser bar` l() away `from Contact with the vertical channel piece 2 (Fig.` 4), Ifk no hand control is applied tothe Window itself,

v the window Vwill now travel upwards under the driving force of the spring in the barrel 20. Alternatively if `hand pressure is put upon thewindow it can be lowered to anyl desired degree against the forceof the springr in the spring barrel. y

Immediately the`handle l9 is lowered the presser bar 10 and latch 4 return to their operative positions. f i Y f It is important to observe that owing to the `positive engagement of the latch 4in the recesses 3 it is not possible for the window to creep upwards, nor can downward pressure, such as by a passenger leaning over the window, cause it to become lowered. More- 5 over the presser bar l0 exerts a well distributed edge pressure on the channel piece i2 and thereby prevents rattling` of the window in the door frame, and serves to keep out draughts.

Obviously the latch and presser bar arrangement is preferably provided at both ot the vertical edges of the window.

In a. simplified construct-ional torni ot' the invention shown in Fig. which is a frag- 5 mentary vertical sectional view comparable with Fig. 2, the body portion ot the latch has only one upstanding post 7 which is so located as tobe engaged by a crank or arm 17', and is sov disposed that in operation after the latch has been withdrawn sittliciently to be free troni the recess in which it was housed, further retractive movement ot the latch-body causes the said post 7" to engage a lug or projection 9 on the presser bar 1t) and thereby to rock the latter away from Contact with the window glass frame.

That I claiin is 1. A latching device for adjustable windows comprising a spring' cont-rolled sliding latch, a movable window frame tormed willi a row ot recesses toaccommodateI the latch, the latch comprising,y a sliding body portion formed with a recess, a springl accommodated in said recess for projecting the latch into one ol the said recesses, a hter on said body portion, and means tor withdrawing the latch co-operating with said lag.

2. ln a latching and braking device Yfor windows a braking device normally engaging` said window, a latch comprising` a body portion and a latch portion, means 'tor ,Kruiding said latch in its reciprocating movements, means for urgingr said latch in one direction to lock the window, means operable at will for urging said latch in the opposite direction, a post on the body portion o'l' said latch, and a projection on said braking device norinally spaced 'from said post but engaging therewith to retract said brakingr device from the window when said latch is moved sutliciently in said opposite direction.

ERNEST JOHN RAWLINGS. 

